Over the past year, bird flu has spread far beyond America’s avian creatures. Largely concentrated among farm animals, it’s also hit zoos, domestic pets and even people.
The risk to public health remains very low. But experts are watching the disease closely as it spreads and adapts among animals, in case any changes improve it’s ability to infect to humans. Cows have also been seriously affected by bird flu. Nearly 900 herds of cattle in 16 states have seen bird flu infections, according to the U.S. Department of Agriculture.